JSXGraph Wiki - User contributions [en]

Circle

2008-09-17T15:56:31Z

84.147.86.108:

== Circle through two points ==
One possibility to construct a circle is to give its center and a point defining its radius.
Lets construct two points "A" and "B".
<source lang="javascript">
var b = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = board.createElement('point',[0,0], {name:'A',style:6});
var p2 = board.createElement('point',[2,-1], {name:'B',style:6});
</source>
Then we construct a circle through "A" and "B". The setting of a new color and changing the stroke-width is not necessary.
<source lang="javascript">
var ci = brd.createElement('circle',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</source>

<html>
<link rel="stylesheet" type="text/css" href="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraph.css" />
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script>
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
<div id="jxgbox" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd.createElement('point',[0,0], {name:'A',style:6});
var p2 = brd.createElement('point',[2,-1], {name:'B',style:6});
var ci = brd.createElement('circle',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</script>
</html>

Generally it is better to use JavaScript variables and not Geometry-Element names when constructing.
Now, we do the same examples with JavaScript variables. To show other variations, we use a dashed stroke style and set a fill color.

<source lang="javascript">
var ci2 = brd2.createElement('circle',[p1,p2],
{strokeWidth:3, dash:2, fillColor:'#ffff00', fillOpacity:0.3});
</source>

<html>
<div id="jxgbox2" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd2 = JXG.JSXGraph.initBoard('jxgbox2', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd2.createElement('point',[0,0], {name:'A',style:6});
var p2 = brd2.createElement('point',[2,-1], {name:'B',style:6});
var ci2 = brd2.createElement('circle',[p1,p2],
{strokeWidth:3, dash:2, fillColor:'#ffff00', fillOpacity:0.3});
</script>
</html>

[[Category:Examples]]

Circle

2008-09-17T15:55:39Z

84.147.86.108:

== Circle through two points ==
One possibility to construct a circle is to give its center and a point defining its radius.
Lets construct two points "A" and "B".
<source lang="javascript">
var b = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = board.createElement('point',[0,0], {name:'A',style:6});
var p2 = board.createElement('point',[2,-1], {name:'B',style:6});
</source>
Then we construct a circle through "A" and "B". The setting of a new color and changing the stroke-width is not necessary.
<source lang="javascript">
var li = brd.createElement('circle',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</source>

<html>
<link rel="stylesheet" type="text/css" href="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraph.css" />
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script>
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
<div id="jxgbox" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd.createElement('point',[0,0], {name:'A',style:6});
var p2 = brd.createElement('point',[2,-1], {name:'B',style:6});
var ci = brd.createElement('circle',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</script>
</html>

Generally it is better to use JavaScript variables and not Geometry-Element names when constructing.
Now, we do the same examples with JavaScript variables. To show other variations, we use a dashed stroke style and set a fill color.

<source lang="javascript">
var ci2 = brd2.createElement('circle',[p1,p2],
{strokeWidth:3, dash:2, fillColor:'#ffff00', fillOpacity:0.3});
</source>

<html>
<div id="jxgbox2" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd2 = JXG.JSXGraph.initBoard('jxgbox2', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd2.createElement('point',[0,0], {name:'A',style:6});
var p2 = brd2.createElement('point',[2,-1], {name:'B',style:6});
var ci2 = brd2.createElement('circle',[p1,p2],
{strokeWidth:3, dash:2, fillColor:'#ffff00', fillOpacity:0.3});
</script>
</html>

[[Category:Examples]]

Circle

2008-09-17T15:52:09Z

84.147.86.108: New page: == Circle through two points == One possibility to construct a circle is to give its center and a point defining its radius. Lets construct two points "A" and "B". <source lang="javascript"> var b...

== Circle through two points ==
One possibility to construct a circle is to give its center and a point defining its radius.
Lets construct two points "A" and "B".
<source lang="javascript">
var b = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = board.createElement('point',[-1,1], {name:'A',style:6});
var p2 = board.createElement('point',[2,-1], {name:'B',style:6});
</source>
Then we construct a circle through "A" and "B". The setting of a new color and changing the stroke-width is not necessary.
<source lang="javascript">
var li = brd.createElement('circle',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</source>

<html>
<link rel="stylesheet" type="text/css" href="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraph.css" />
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script>
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
<div id="jxgbox" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd.createElement('point',[-1,1], {name:'A',style:6});
var p2 = brd.createElement('point',[2,-1], {name:'B',style:6});
var ci = brd.createElement('circle',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</script>
</html>

Generally it is better to use JavaScript variables and not Geometry-Element names when constructing.
Now, we do the same examples with JavaScript variables. To show another variation, we use a dashed stroke style.

<source lang="javascript">
var ci2 = brd2.createElement('circle',[p1,p2], {strokeWidth:3, dash:2});
</source>

<html>
<div id="jxgbox2" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd2 = JXG.JSXGraph.initBoard('jxgbox2', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd2.createElement('point',[-1,1], {name:'A',style:6});
var p2 = brd2.createElement('point',[2,-1], {name:'B',style:6});
var ci2 = brd2.createElement('circle',[p1,p2], {strokeWidth:3, dash:2});
</script>
</html>

[[Category:Examples]]

Line

2008-09-17T15:46:40Z

84.147.86.108:

== Construction of a line ==
A line needs two points. Lets construct two points "A" and "B".
<source lang="javascript">
var b = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = board.createElement('point',[-1,1], {name:'A',style:6});
var p2 = board.createElement('point',[2,-1], {name:'B',style:6});
</source>
Then we construct a line through "A" and "B". The setting of a new color and changing the stroke-width is not necessary.
<source lang="javascript">
var li = brd.createElement('line',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</source>

<html>
<link rel="stylesheet" type="text/css" href="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraph.css" />
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script>
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
<div id="jxgbox" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd.createElement('point',[-1,1], {name:'A',style:6});
var p2 = brd.createElement('point',[2,-1], {name:'B',style:6});
var li = brd.createElement('line',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</script>
</html>

Generally it is better to use JavaScript variables and not Geometry-Element names when constructing.
Now, we do the same examples with JavaScript variables. Further, we don't show the whole line, but only a segment. To show another variation, we use a dashed line style.

<source lang="javascript">
var li2 = brd2.createElement('line',[p1,p2],
{straightFirst:false, straightLast:false, strokeWidth:2, dash:2});
</source>

<html>
<div id="jxgbox2" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd2 = JXG.JSXGraph.initBoard('jxgbox2', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd2.createElement('point',[-1,1], {name:'A',style:6});
var p2 = brd2.createElement('point',[2,-1], {name:'B',style:6});
var li2 = brd2.createElement('line',[p1,p2], {straightFirst:false, straightLast:false, strokeWidth:2, dash:2});
</script>
</html>

[[Category:Examples]]

Line

2008-09-17T15:45:51Z

84.147.86.108:

== Construction of a line ==
A line needs two points. Lets construct two points "A" and "B".
<source lang="javascript">
var b = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = board.createElement('point',[-1,1], {name:'A',style:6});
var p2 = board.createElement('point',[2,-1], {name:'B',style:6});
</source>
Then we construct a line through "A" and "B". The setting of a new color and changing the stroke-width is not necessary.
<source lang="javascript">
var li = brd.createElement('line',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</source>

<html>
<link rel="stylesheet" type="text/css" href="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraph.css" />
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script>
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
<div id="jxgbox" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd.createElement('point',[-1,1], {name:'A',style:6});
var p2 = brd.createElement('point',[2,-1], {name:'B',style:6});
var li = brd.createElement('line',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</script>
</html>

Generally it is better to use JavaScript variables and not Geometry-Element names when constructing.
Now, we do the same examples with JavaScript variables. Further, we don't show the whole line, but only a segment. To show another variation, we use a dashed line style.

<source lang="javascript">
var li2 = brd2.createElement('line',[p1,p2],
{straightFirst:false, straightLast:false, strokeWidth:2});
</source>

<html>
<div id="jxgbox2" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd2 = JXG.JSXGraph.initBoard('jxgbox2', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd2.createElement('point',[-1,1], {name:'A',style:6});
var p2 = brd2.createElement('point',[2,-1], {name:'B',style:6});
var li2 = brd2.createElement('line',[p1,p2], {straightFirst:false, straightLast:false, strokeWidth:2, dash:2});
</script>
</html>

[[Category:Examples]]

Line

2008-09-17T15:45:12Z

84.147.86.108:

== Construction of a line ==
A line needs two points. Lets construct two points "A" and "B".
<source lang="javascript">
var b = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = board.createElement('point',[-1,1], {name:'A',style:6});
var p2 = board.createElement('point',[2,-1], {name:'B',style:6});
</source>
Then we construct a line through "A" and "B". The setting of a new color and changing the stroke-width is not necessary.
<source lang="javascript">
var li = brd.createElement('line',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</source>

<html>
<link rel="stylesheet" type="text/css" href="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraph.css" />
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script>
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
<div id="jxgbox" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd.createElement('point',[-1,1], {name:'A',style:6});
var p2 = brd.createElement('point',[2,-1], {name:'B',style:6});
var li = brd.createElement('line',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</script>
</html>

Generally it is better to use JavaScript variables and not Geometry-Element names when constructing.
Now, we do the same examples with JavaScript variables. Further, we don't show the whole line, but only a segment. To show another variant, we use a dashed line style.

<source lang="javascript">
var li2 = brd2.createElement('line',[p1,p2], {straightFirst:false, straightLast:false, strokeWidth:2});
</source>

<html>
<div id="jxgbox2" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd2 = JXG.JSXGraph.initBoard('jxgbox2', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd2.createElement('point',[-1,1], {name:'A',style:6});
var p2 = brd2.createElement('point',[2,-1], {name:'B',style:6});
var li2 = brd2.createElement('line',[p1,p2], {straightFirst:false, straightLast:false, strokeWidth:2, dash:2});
</script>
</html>

[[Category:Examples]]

Line

2008-09-17T15:44:45Z

84.147.86.108:

== Construction of a line ==
A line needs two points. Lets construct two points "A" and "B".
<source lang="javascript">
var b = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = board.createElement('point',[-1,1], {name:'A',style:6});
var p2 = board.createElement('point',[2,-1], {name:'B',style:6});
</source>
Then we construct a line through "A" and "B". The setting of a new color and changing the stroke-width is not necessary.
<source lang="javascript">
var li = brd.createElement('line',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</source>

<html>
<link rel="stylesheet" type="text/css" href="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraph.css" />
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script>
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
<div id="jxgbox" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd.createElement('point',[-1,1], {name:'A',style:6});
var p2 = brd.createElement('point',[2,-1], {name:'B',style:6});
var li = brd.createElement('line',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</script>
</html>

Generally it is better to use JavaScript variables and not Geometry-Element names when constructing.
Now, we do the same examples with JavaScript variables. Further, we don't show the whole line, but only a segment. To show another variant, we use a dashed line style.

<source lang="javascript">
var li2 = brd2.createElement('line',[p1,p2], {straightFirst:false, straightLast:false, strokeWidth:2});
</source>

<html>
<div id="jxgbox2" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd2 = JXG.JSXGraph.initBoard('jxgbox2', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd2.createElement('point',[-1,1], {name:'A',style:6});
var p2 = brd2.createElement('point',[2,-1], {name:'B',style:6});
var li2 = brd2.createElement('line',[p1,p2], {straightFirst:false, straightLast:false, strokeWidth:2, dash:2});
</script>
</html>

Line

2008-09-17T15:43:36Z

84.147.86.108:

== Construction of a line ==
A line needs two points. Lets construct two points "A" and "B".
<source lang="javascript">
var b = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = board.createElement('point',[-1,1], {name:'A',style:6});
var p2 = board.createElement('point',[2,-1], {name:'B',style:6});
</source>
Then we construct a line through "A" and "B". The setting of a new color and changing the stroke-width is not necessary.
<source lang="javascript">
var li = brd.createElement('line',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</source>

<html>
<link rel="stylesheet" type="text/css" href="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraph.css" />
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script>
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
<div id="jxgbox" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd.createElement('point',[-1,1], {name:'A',style:6});
var p2 = brd.createElement('point',[2,-1], {name:'B',style:6});
var li = brd.createElement('line',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</script>
</html>

Generally it is better to use JavaScript variables and not Geometry-Element names when constructing.
Now, we do the same examples with JavaScript variables. Further, we don't show the whole line, but only a segment.

<source lang="javascript">
var li2 = brd2.createElement('line',[p1,p2], {straightFirst:false, straightLast:false, strokeWidth:2});
</source>

<html>
<div id="jxgbox2" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd2 = JXG.JSXGraph.initBoard('jxgbox2', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd2.createElement('point',[-1,1], {name:'A',style:6});
var p2 = brd2.createElement('point',[2,-1], {name:'B',style:6});
var li2 = brd2.createElement('line',[p1,p2], {straightFirst:false, straigtLast:false, strokeWidth:2});
</script>
</html>

Line

2008-09-17T15:42:57Z

84.147.86.108:

== Construction of a line ==
A line needs two points. Lets construct two points "A" and "B".
<source lang="javascript">
var b = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = board.createElement('point',[-1,1], {name:'A',style:6});
var p2 = board.createElement('point',[2,-1], {name:'B',style:6});
</source>
Then we construct a line through "A" and "B". The setting of a new color and changing the stroke-width is not necessary.
<source lang="javascript">
var li = brd.createElement('line',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</source>

<html>
<link rel="stylesheet" type="text/css" href="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraph.css" />
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script>
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
<div id="jxgbox" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd.createElement('point',[-1,1], {name:'A',style:6});
var p2 = brd.createElement('point',[2,-1], {name:'B',style:6});
var li = brd.createElement('line',["A","B"], {strokeColor:'#00ff00',strokeWidth:2});
</script>
</html>

Generally it is better to use JavaScript variables and not Geometry-Element names when constructing.
Now, we do the same examples with JavaScript variables. Further, we don't show the whole line, but only a segment.

<source lang="javascript">
var li2 = brd2.createElement('line',[p1,p2], {straightFirst:false, straigtLast:false, strokeWidth:2});
</source>

<html>
<div id="jxgbox2" class="jxgbox" style="width:500px; height:200px;"></div>
<script type="text/javascript">
var brd2 = JXG.JSXGraph.initBoard('jxgbox2', {originX: 200, originY: 100, unitX: 50, unitY: 50});
var p1 = brd2.createElement('point',[-1,1], {name:'A',style:6});
var p2 = brd2.createElement('point',[2,-1], {name:'B',style:6});
var li2 = brd2.createElement('line',[p1,p2], {straightFirst:false, straigtLast:false, strokeWidth:2});
</script>
</html>